The interaction between Sm(Ⅲ)(MTB)2 complex and Herring Sperm DNA has been studied by UV-Vis spectral, Fluorescence spectral in buffer solution of Tris-HCl (pH=7.25) using Neutral Red (NR) as a probe. The intercalati...The interaction between Sm(Ⅲ)(MTB)2 complex and Herring Sperm DNA has been studied by UV-Vis spectral, Fluorescence spectral in buffer solution of Tris-HCl (pH=7.25) using Neutral Red (NR) as a probe. The intercalation and electrostatic manner are confirmed to be the two major modes for interaction between Sm(Ⅲ)(MTB)2 complex and Herring Sperm DNA. The balance constant of Sm(Ⅲ)(MTB)2 rare earth metal complex and Herring Sperm DNA is K=4.10 × 104 L·mol-1. The results indicate that biological functions of Herring Sperm DNA are changed to a certain extend due to the interaction between Sm(Ⅲ)(MTB)2 rare earth metal complex and Herring Sperm DNA.展开更多
A new coordi nation comp ound Co(Ⅲ)abstract:Hdmg)abstract: 2 (H 2 O)abstract: 2 Mn(Ⅱ)abstract:Cl 3 was synthesized and its crystal structure was determined.The crystal data ar e as follows:crystal system,orthorhombi...A new coordi nation comp ound Co(Ⅲ)abstract:Hdmg)abstract: 2 (H 2 O)abstract: 2 Mn(Ⅱ)abstract:Cl 3 was synthesized and its crystal structure was determined.The crystal data ar e as follows:crystal system,orthorhombic;space group,C222 1 (#20)abstract:;a=1.18315(3)abstract:nm,b=1.28631(5)abstract:nm,c=1.14355(2)abstract:nm,V=1.74037(9)abstract:nm 3 ,Z=4,D c =1.857g·cm -3 ,F(000)abstract:=980.00,μ (MoK α )abstract:=21.69cm -1 ,R 1 =0.030,wR 2 =0.92.The coordination geometries around Co(Ⅲ)abstract:and Mn(Ⅱ)abstract:atoms are distorted o ct ahedral and distorted trigonal bipyramidal,respectively.The Hdmg chelates Co( Ⅲ)abstract:an d bridges to two Mn(Ⅱ)abstract:atoms to form a polyheteronuclear helical structure alo ng t he c axis.展开更多
以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通...以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通过EDS和UV-Vis吸收光谱表征了薄膜的成分及光学性能,结果表明,当沉积温度为350℃时,N/C-TiO_2薄膜的N、C质量分数最高,其禁带宽度降低为2. 82 e V,对可见光的吸收最强。与纯的二氧化钛薄膜相比,N/C-TiO_2薄膜对亚甲基蓝的降解率显著提高到90%。展开更多
Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure anal...Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure analyses. The crystal data are as follows: K 3[Gd Ⅲ(nta) 2·(H 2O)]·6H 2O, monoclinic system, C2/c space group, a=1.534 81(15) nm, b=1.292 05(12) nm, c=2.610 8(3) nm, β=96.244(2)°, V=5.146 7(9) nm 3, Z=8, M=776.87, D c=2.005 g/cm 3, μ= 3.149 mm -1 and \{F(000)=\}3 080, R=0.024 5, wR=0.064 3 for 4 455 unique reflections and R= 0.028 9, wR=0.067 2 for all 10 305 reflections. The Gd ⅢN 2O 7 part in the [Gd Ⅲ(nta) 2(H 2O)] 3- anion is a pseudo-monocapped square antiprismatic nine-coordination structure.(NH 4)[Gd Ⅲ(Cydta)(H 2O) 2]·5H 2O, triclinic system, P1 space group, a=0.866 2(3) nm, b=1.006 7(3) nm, c= 1.444 8(5) nm, α= 88.282(5)°, β=75\^190(5)°, γ=88.317(4)°, V=1.217 2(7) nm 3, Z=2, M=643.69, D c=1.756 g/cm 3, μ=2.798 mm -1 and F(000)=650, R=0.030 3, wR=0.080 9 for 4 273 unique reflections and R=0.033 2, wR=0.082 5 for all 5 062 reflections. The Gd ⅢN 2O 6 part in the [Gd Ⅲ(Cydta)(H 2O) 2] - anion has a pseudo-square antiprismatic eight-coordination structure.展开更多
文摘The interaction between Sm(Ⅲ)(MTB)2 complex and Herring Sperm DNA has been studied by UV-Vis spectral, Fluorescence spectral in buffer solution of Tris-HCl (pH=7.25) using Neutral Red (NR) as a probe. The intercalation and electrostatic manner are confirmed to be the two major modes for interaction between Sm(Ⅲ)(MTB)2 complex and Herring Sperm DNA. The balance constant of Sm(Ⅲ)(MTB)2 rare earth metal complex and Herring Sperm DNA is K=4.10 × 104 L·mol-1. The results indicate that biological functions of Herring Sperm DNA are changed to a certain extend due to the interaction between Sm(Ⅲ)(MTB)2 rare earth metal complex and Herring Sperm DNA.
文摘A new coordi nation comp ound Co(Ⅲ)abstract:Hdmg)abstract: 2 (H 2 O)abstract: 2 Mn(Ⅱ)abstract:Cl 3 was synthesized and its crystal structure was determined.The crystal data ar e as follows:crystal system,orthorhombic;space group,C222 1 (#20)abstract:;a=1.18315(3)abstract:nm,b=1.28631(5)abstract:nm,c=1.14355(2)abstract:nm,V=1.74037(9)abstract:nm 3 ,Z=4,D c =1.857g·cm -3 ,F(000)abstract:=980.00,μ (MoK α )abstract:=21.69cm -1 ,R 1 =0.030,wR 2 =0.92.The coordination geometries around Co(Ⅲ)abstract:and Mn(Ⅱ)abstract:atoms are distorted o ct ahedral and distorted trigonal bipyramidal,respectively.The Hdmg chelates Co( Ⅲ)abstract:an d bridges to two Mn(Ⅱ)abstract:atoms to form a polyheteronuclear helical structure alo ng t he c axis.
文摘以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通过EDS和UV-Vis吸收光谱表征了薄膜的成分及光学性能,结果表明,当沉积温度为350℃时,N/C-TiO_2薄膜的N、C质量分数最高,其禁带宽度降低为2. 82 e V,对可见光的吸收最强。与纯的二氧化钛薄膜相比,N/C-TiO_2薄膜对亚甲基蓝的降解率显著提高到90%。
文摘Two new Gd Ⅲ complexes with nitrilotriacetic acid(nta) and trans-1,2-cyclohexanediaminetetraacetic acid(Cydta) ligands were synthesized. Their crystal structures were determined by single-crystal X-ray structure analyses. The crystal data are as follows: K 3[Gd Ⅲ(nta) 2·(H 2O)]·6H 2O, monoclinic system, C2/c space group, a=1.534 81(15) nm, b=1.292 05(12) nm, c=2.610 8(3) nm, β=96.244(2)°, V=5.146 7(9) nm 3, Z=8, M=776.87, D c=2.005 g/cm 3, μ= 3.149 mm -1 and \{F(000)=\}3 080, R=0.024 5, wR=0.064 3 for 4 455 unique reflections and R= 0.028 9, wR=0.067 2 for all 10 305 reflections. The Gd ⅢN 2O 7 part in the [Gd Ⅲ(nta) 2(H 2O)] 3- anion is a pseudo-monocapped square antiprismatic nine-coordination structure.(NH 4)[Gd Ⅲ(Cydta)(H 2O) 2]·5H 2O, triclinic system, P1 space group, a=0.866 2(3) nm, b=1.006 7(3) nm, c= 1.444 8(5) nm, α= 88.282(5)°, β=75\^190(5)°, γ=88.317(4)°, V=1.217 2(7) nm 3, Z=2, M=643.69, D c=1.756 g/cm 3, μ=2.798 mm -1 and F(000)=650, R=0.030 3, wR=0.080 9 for 4 273 unique reflections and R=0.033 2, wR=0.082 5 for all 5 062 reflections. The Gd ⅢN 2O 6 part in the [Gd Ⅲ(Cydta)(H 2O) 2] - anion has a pseudo-square antiprismatic eight-coordination structure.
